Proline-rich peptide sequences have been shown to play important roles in protein-protein interactions that occur in signal transduction pathways. Specific proline-rich consensus sequences that bind SH3 domains have been identified.
The predicted 114-amino acid SH3BGRL protein has a potential cell attachment sequence. A proline-rich sequence containing an SH3-binding motif is present in the middle of the protein. The SH3BGRL protein shares 60% identity with the proline-rich central region of SH3BGR. Northern blot analysis detected a single SH3BGRL transcript of approximately 1.9 kb that was present in all tissues examined.Mouse cDNA encoding a deduced protein that is 95% identical to human SH3BGRL.
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